Use h5iostorage directly

docs/environment.yml

@@ -2,7 +2,10 @@ channels:
 - conda-forge
 dependencies:
 - ipykernel
+- myst-parser
 - nbsphinx
+- sphinx-gallery
+- sphinx-rtd-theme
 - coveralls
 - coverage
 - bidict =0.22.1
@@ -13,4 +16,3 @@ dependencies:
 - python-graphviz =0.20.1
 - toposort =1.10
 - typeguard =4.1.5
-- myst-parser

pyiron_workflow/node.py

@@ -225,6 +225,10 @@ class Node(HasToDict, ABC, metaclass=AbstractHasPost):
 
     package_identifier = None
 
+    _STORAGE_FILE_NAME = "project.h5"
+    # This isn't nice, just a technical necessity in the current implementation
+    # Eventually, of course, this needs to be _at least_ file-format independent
+
     def __init__(
         self,
         label: str,
@@ -267,15 +271,16 @@ def __post__(
         run_after_init: bool = False,
         **kwargs,
     ):
-        hardcoded_tinybase_filename = "project.h5"
-        save_exists = self.working_directory.file_exists(hardcoded_tinybase_filename)
+        save_exists = self.working_directory.file_exists(self._STORAGE_FILE_NAME)
 
         if save_exists and overwrite_save:
-            self.working_directory.remove_files(hardcoded_tinybase_filename)
+            self.working_directory.remove_files(self._STORAGE_FILE_NAME)
 
-        self.working_directory.delete(only_if_empty=True)
-        # Touching the working directory may have created it -- if it's there and empty
-        # just clean it up
+        if self.working_directory.is_empty():
+            self.working_directory.delete()
+            self._working_directory = None
+            # Touching the working directory may have created it -- if it's there and
+            # empty just clean it up
 
         do_load = save_exists and not overwrite_save
 
@@ -1097,8 +1102,10 @@ def load(self):
 
     @property
     def storage(self):
-        from pyiron_contrib.tinybase.project.h5io import SingleHdfProject
+        from pyiron_contrib.tinybase.storage import H5ioStorage
+        from h5io_browser import Pointer
 
-        return SingleHdfProject.open_location(
-            str(self.working_directory.path.resolve())
-        ).create_storage(self.label)
+        storage_file = str(
+            (self.working_directory.path / self._STORAGE_FILE_NAME).resolve()
+        )
+        return H5ioStorage(Pointer(storage_file), None)